In this article, unless the context otherwise requires:

1. "Disposal" means discharging, depositing, injecting, dumping, spilling, leaking or placing hazardous waste into or on land or water so that hazardous waste or any constituent of hazardous waste may enter the environment, be emitted into the air or discharged into any waters, including groundwater.

2. "Facility" includes all contiguous land and structures, other appurtenances and improvements on the land used for treating, storing or disposing of hazardous waste. A facility may consist of several treatment, storage or disposal units.

3. "Federal act" means the solid waste disposal act, as amended by the resource conservation and recovery act of 1976 and the hazardous and solid waste amendments of 1984 (P.L. 94-580; 90 Stat. 2795).

4. "Generation" means the act or process of producing hazardous waste.

5. "Hazardous waste" means garbage, refuse, sludge from a waste treatment plant, water supply treatment plant or air pollution control facility, or other discarded materials, including solid, liquid, semisolid or contained gaseous material, resulting from industrial, commercial, mining and agricultural operations or from community activities which because of its quantity, concentration or physical, chemical or infectious characteristics may cause or significantly contribute to an increase in mortality or an increase in serious irreversible or incapacitating reversible illness or pose a substantial present or potential hazard to human health or the environment if improperly treated, stored, transported, disposed of or otherwise managed or any waste identified as hazardous pursuant to section 49-922. Hazardous waste does not include solid or dissolved material in domestic sewage, solid or dissolved materials in irrigation return flows or industrial discharges which are point sources subject to permits under section 402 of the federal water pollution control act (P.L. 92-500; 86 Stat. 816), as amended, or source, special nuclear or by-product material as defined by the atomic energy act of 1954 (68 Stat. 919), as amended.

6. "Key employee" means any person employed by an applicant or permittee in a supervisory capacity or empowered to make discretionary decisions with respect to the solid waste or hazardous waste operations of the business concern. Key employee does not include an employee exclusively engaged in the physical or mechanical collection, transportation, treatment, storage or disposal of solid or hazardous waste.

7. "Manifest" means the form used for identifying the quantity, composition, origin, routing and destination of hazardous waste during its transportation from the point of generation to the point of disposal, treatment or storage.

8. "Person" means an individual, trust, firm, joint stock company, corporation, including a government corporation, partnership, association, state, municipality, commission, political subdivision of the state, interstate body or federal facility.

9. "Storage" means the holding of hazardous waste for a temporary period at the end of which the hazardous waste is treated, disposed of or stored elsewhere.

10. "Transportation" means the movement of hazardous waste by air, rail, highway or water.

11. "Treatment" means a method, technique or process designed to change the physical, chemical or biological character or composition of hazardous waste so as to neutralize such waste or to render such waste nonhazardous, safer for transport, amenable for recovery, amenable for storage or reduced in volume.